hi,
this patchset adds trampoline and dispatcher objects
to be visible in /proc/kallsyms. The last patch also
adds sorting for all bpf objects in /proc/kallsyms.
$ sudo cat /proc/kallsyms | tail -20
...
ffffffffa050f000 t bpf_prog_5a2b06eab81b8f51 [bpf]
ffffffffa0511000 t bpf_prog_6deef7357e7b4530 [bpf]
ffffffffa0542000 t bpf_trampoline_13832 [bpf]
ffffffffa0548000 t bpf_prog_96f1b5bf4e4cc6dc_mutex_lock [bpf]
ffffffffa0572000 t bpf_prog_d1c63e29ad82c4ab_bpf_prog1 [bpf]
ffffffffa0585000 t bpf_prog_e314084d332a5338__dissect [bpf]
ffffffffa0587000 t bpf_prog_59785a79eac7e5d2_mutex_unlock [bpf]
ffffffffa0589000 t bpf_prog_d0db6e0cac050163_mutex_lock [bpf]
ffffffffa058d000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf]
ffffffffa05df000 t bpf_trampoline_25637 [bpf]
ffffffffa05e3000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf]
ffffffffa05e5000 t bpf_prog_3b185187f1855c4c [bpf]
ffffffffa05e7000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf]
ffffffffa05eb000 t bpf_prog_93cebb259dd5c4b2_do_sys_open [bpf]
ffffffffa0677000 t bpf_dispatcher_xdp [bpf]
thanks,
jirka
---
Björn Töpel (1):
bpf: Add bpf_trampoline_ name prefix for DECLARE_BPF_DISPATCHER
Jiri Olsa (13):
x86/mm: Rename is_kernel_text to __is_kernel_text
bpf: Add struct bpf_ksym
bpf: Add name to struct bpf_ksym
bpf: Add lnode list node to struct bpf_ksym
bpf: Add bpf_kallsyms_tree tree
bpf: Move bpf_tree add/del from bpf_prog_ksym_node_add/del
bpf: Separate kallsyms add/del functions
bpf: Add bpf_ksym_add/del functions
bpf: Re-initialize lnode in bpf_ksym_del
bpf: Rename bpf_tree to bpf_progs_tree
bpf: Add trampolines to kallsyms
bpf: Add dispatchers to kallsyms
bpf: Sort bpf kallsyms symbols
arch/x86/mm/init_32.c | 14 ++++++----
include/linux/bpf.h | 54 ++++++++++++++++++++++++++------------
include/linux/filter.h | 13 +++-------
kernel/bpf/core.c | 182 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------
kernel/bpf/dispatcher.c | 6 +++++
kernel/bpf/trampoline.c | 23 ++++++++++++++++
kernel/events/core.c | 4 +--
net/core/filter.c | 5 ++--
8 files changed, 219 insertions(+), 82 deletions(-)
